Certified Technology Specialist (CTS) Exam 2025 – 400 Free Practice Questions to Pass the Exam

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What is "keystone correction"?

A method to amplify audio signals

A feature that adjusts the image shape to ensure it appears rectangular on the screen

Keystone correction refers to a crucial feature in projection technology that adjusts the shape of the projected image to ensure it appears rectangular on the screen. This adjustment is necessary when a projector is not aligned perfectly with the screen. For example, if a projector is placed at an angle rather than directly in front of the screen, the resulting image may appear distorted, taking on a trapezoidal shape. Keystone correction allows the user to digitally correct this distortion by tweaking the corners of the image until it appears as a proper rectangle, enhancing readability and overall viewing experience. This adjustment can be essential in various applications, including business presentations, classrooms, and home theaters, where the visual clarity of the projected content is critical.

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A technique for improving video resolution

A process for mixing multiple audio tracks

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